B.2.2. Entire Domain, Monitoring Only, Per-Message Reports

The Domain Owner from the previous example has used the aggregate
reporting to discover some messaging systems that had not yet
implemented DKIM correctly, but they are still seeing periodic
authentication failures. In order to diagnose these intermittent
problems, they wish to request per-message failure reports when
authentication failures occur.

B.2.2. ドメイン全体、監視のみ、メッセージ毎にレポート

Not all Receivers will honor such a request, but the Domain Owner
feels that any reports it does receive will be helpful enough to
justify publishing this record. The default per-message report
format ([AFRF]) meets the Domain Owner’s needs in this scenario.